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參數(shù)資料
| 型號(hào)： | XR-T6164A |
| 廠(chǎng)商： | Exar Corporation |
| 英文描述： | Digital Line Interface Transceiver(數(shù)字線(xiàn)接口收發(fā)器) |
| 中文描述： | 數(shù)字線(xiàn)路接口收發(fā)器（數(shù)字線(xiàn)接口收發(fā)器） |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 92K |
| 代理商： | XR-T6164A |
XR-T6164A
6
Rev. 1.00
SYSTEM DESCRIPTION
The XR-T6164A is a general purpose line interface chip
that contains the receive and transmit circuitry necessary
to convert TTL logic levels to a bipolar signal both to and
from a twisted pair cable.
Receiver
The XR-T6164A receiver section converts a balanced
bipolar signal that has been attenuated and distorted by
up to 10dB of twisted pair cable to active-low TTL
compatible logic levels.
The cable is transformer coupled to the receiver
differential inputs (RX+IP, RX-IP) which are biased
through the input transformer secondary winding by a
voltage generated on-chip (I/P BIAS). The bipolar receive
signal is applied to a peak detector, and to a pair of data
comparators. The peak detector output voltage charges
an external capacitor connected to PEAK CAP. This
voltage generates a data comparator bias level that is
approximately 50% of the peak input pulse amplitude.
Thus, data slicing is automatically accomplished at the
optimum level over the full cable loss range. TTL
compatible output stages buffer the receiver digital
outputs (S+R, S-R) and provide active low signals
corresponding to received positive and negative input
pulses.
Loss of input signal is detected by a comparator that
monitors input signal level. An active-low TTL compatible
logic level (RX ALARM) indicates signal loss.
Comparator hysteresis prevents chatter on this output.
Ping-pong operation is made possible by the time
compression multiplex control input (TCM CON). A logic
0 applied to this pin during transmission stores the peak
detector output voltage by disconnecting the peak
detector storage capacitor charge and discharge paths.
Since the receive data comparator bias voltage is stored
during transmit mode, it is immediately available when
receive mode resumes.
Transmitter
The XR-T6164A transmitter section contains two
matched open collector output drivers that are capable of
driving the line transformer directly with a current up to
40mA. The transmitter output drivers include diode
clamps to ensure non-saturating operation. Transmitter
digital inputs, which are active-low, are TTL compatible.
External resistors are used between the transmitter
outputs and the output transformer primary to set the
output pulse amplitude.
APPLICATION INFORMATION
Figure 2
shows a general line driver application circuit
using the XR-T6164A. This device converts bipolar
transmit and receive signals in the 64Kbps to 1.544Mbps
range to active-low TTL compatible logic levels.
Bipolar signals that have been attenuated and distorted
by twisted pair cable are transformer-coupled to the line
side of the XR-T6164A as shown on the left side of
Figure 2 Suggested transformers for both the input and
output applications are the Pulse types PE-65535 or
TTI–7147 for 64Kbps use and the PE-65835 for
1.544Mbps applications.
The right side of Figure 2 shows the TTL compatible
digital inputs and outputs. Please refer to the pin
description section of this data sheet for detailed
information about each signal.
相關(guān)PDF資料 |
PDF描述 |
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| XR-T6164 | Digital Line Interface Transceiver(數(shù)字線(xiàn)接口收發(fā)器) |
| XR-T6165 | Codirectional Digital Data Processor |
| XR-T6166 | Codirectional Digital Data Processor |
| XR-T6166CD | MS (MIL-C-5015)/97 SERIES 3108A SOLID SHELL ANGLE PLUGS, RIGHT ANGLE BODY STYLE, SOLDER TERMINATION, 20 SHELL SIZE, 20-16 INSERT ARRANGEMENT, PLUG GENDER, 9 CONTACTS |
| XR-T6166CP | AB 6C 1#16 5#12 PIN PLUG |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT6164A_07 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:Digital Line Interface Transceiver |
| XRT6164A_0710 | 制造商:EXAR 制造商全稱(chēng):EXAR 功能描述:Digital Line Interface Transceiver |
| XRT6164AID | 制造商:Exar Corporation 功能描述:DIGITAL LINE INTERFACE TRANSCEIVER |
| XR-T6164AID | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:PCM Transceiver |
| XRT6164AID-F | 功能描述:外圍驅(qū)動(dòng)器與原件 - PCI codirectionalIntrfc RoHS:否 制造商:PLX Technology 工作電源電壓: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FCBGA-1156 封裝:Tray |
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